2015-03-03T20:32:20ZBack Matterhttp://hdl.handle.net/1811/5395
Back Matter
1968-05-01T00:00:00ZBook Noticeshttp://hdl.handle.net/1811/5394
Book Notices
1968-05-01T00:00:00ZSome Observations on the Fine Structure of Three Genera in the Tetrasporaceaehttp://hdl.handle.net/1811/5393
Some Observations on the Fine Structure of Three Genera in the Tetrasporaceae
Wujek, Daniel E.
Detailed study of the ultrastructure of three members of the Tetrasporaceae, Paulschulzia pseudovolvox, Schizochlamys gelatinosa, and Tetraspora gelatinosa, has revealed, for the first time, that the pseudocilia of two of the genera possess a 9+0 fibrillar structural arrangement. Schizochlamys gelatinosa was found to lack thylakoids traversing the pyrenoid. The pyrenoids of the other two genera were found to resemble more closely those described for other green algae.
Author Institution: Department of Biology, Wisconsin State University, La Crosse, Wisconsin 54601
1968-05-01T00:00:00ZWujek, Daniel E.Aquatic Flowering Plants New to the Erie Islandshttp://hdl.handle.net/1811/5392
Aquatic Flowering Plants New to the Erie Islands
Stuckey, Ronald L.
The aquatic Angiosperm flora of the islands at the western end of Lake Erie was intensively studied by A. J. Pieters and E. L. Moseley 60-70 years ago and 20 years ago by E. L. Core. Since then, additional species have been discovered, of which twenty-four are recorded here. Of these Phalaris canariensis, Scirpus acutus, Rorippa sylvestris, Hibiscus militaris, Ammannia coccinea, Epilobium hirsutum, Lycopus asper, L. europaeus, and Mentha gentilis appear to represent recent invaders. Other species, all of which are native, may have either become established recently or may have been overlooked by past workers.
Author Institution: Assistant Professor of Botany and Curator of the Herbarium, The Ohio State University, Columbus, Ohio 43210 and The Frans Theodore Stone Laboratory, Put-in-Bay, Ohio 43456
1968-05-01T00:00:00ZStuckey, Ronald L.Record Low Dissolved Oxygen in the Island Area of Lake Erie 1, 2http://hdl.handle.net/1811/5391
Record Low Dissolved Oxygen in the Island Area of Lake Erie 1, 2
Britt, N. Wilson; Skoch, Edwin J.; Smith, Kenneth R.
The first recorded severe oxygen depletion over an extensive area in the western basin of Lake Erie occurred in 1953. Because sampling in the past was done at irregular intervals, it has been difficult to determine the severity, or duration of these low-oxygen conditions. In order to get more reliable data, a program of daily sampling was initiated. From 22 June to 31 August 1966, data were collected daily at a single station south of Rattlesnake Island. Dissolved oxygen near the bottom fluctuated greatly during this time, reaching a low of 0.1 ppm on 1 July, the lowest value ever recorded from this area, and a high of 9.2 ppm on 19 July. Following this, two more periods of low dissolved oxygen occurred, the first of 3.7 ppm on 7 August and the other of 3.0 ppm on 30 August. In each of these cases, the low-oxygen condition was accompanied by an average wind speed of about six knots and an air temperature of about 26°C. In each case the drop in oxygen near the bottom was very rapid. The mean dissolved oxygen near the bottom for the summer was 5.0 ppm (61.6 percent saturation). Statistical analysis indicates a significant relationship between wind speed and dissolved oxygen.
Author Institution: Faculty of Entomology and College of Biology, The Ohio State University
1968-05-01T00:00:00ZBritt, N. WilsonSkoch, Edwin J.Smith, Kenneth R.Studies of the Mexican Deltocephalinae -1, 2 Aligia and Some New Allied Genera and Species (Homoptera: Cicadellidae)http://hdl.handle.net/1811/5390
Studies of the Mexican Deltocephalinae -1, 2 Aligia and Some New Allied Genera and Species (Homoptera: Cicadellidae)
Kramer, James P.; DeLong, Dwight M.
The Mexican species of Aligia Ball and related genera are largely unknown or undescribed. Hepner (1942) published a study of the 32 species of Aligia known to occur in the United States, and some of these will undoubtedly be found in Mexico eventually. In this paper we describe three new species of Aligia; one new species of Frequenamia DeLong; and two new genera, one with two new species and the other with a single new species. All holotypes and allotypes are in the DeLong Collection; paratypes will be deposited in the collection of the United States National Museum.
Author Institution: Entomology Research Division, Agr. Res. Serv., U. S. Department of Agriculture, Washington, D. C., Professor Emeritus, Department of Zoology and Entomology, The Ohio State University, Columbus, Ohio
1968-05-01T00:00:00ZKramer, James P.DeLong, Dwight M.The History and Flora of Enderlin Forest, A Mixed Coniferous Plantation in Southeastern Ohiohttp://hdl.handle.net/1811/5389
The History and Flora of Enderlin Forest, A Mixed Coniferous Plantation in Southeastern Ohio
Butala, James R.; Wistendahl, Warren A.
Enderlin Forest is an unmanaged conifer plantation in Athens County, Ohio. Established in 1906 by Colonel Richard Enderlin and Mr. Melvin H. Doolittle, the remaining 56-60 acre section of the plantation, now owned by the Mead Corporation, contains a mosaic of conifer and mixed conifer and deciduous plantings. The flora of the forest includes species characteristic of coniferous forests. A total of 197 species of vascular plants were collected, identified, and deposited in the Bartley Herbarium of Ohio University during a 1964-65 ecological study of the forest.
Author Institution: Department of Botany, Ohio University, Athens, Ohio
1968-05-01T00:00:00ZButala, James R.Wistendahl, Warren A.Ascocorticium in Ohiohttp://hdl.handle.net/1811/5388
Ascocorticium in Ohio
Cooke, William Bridge
A collection of the fungus Ascocorticium anomalum (Ell. & Harkn.) Schroet., was made in Ohio, on Nov. 4, 1961, by Harry Knighton and W. B. Cooke, in Hobey's Hollow, Shawnee State Forest, Scioto County. This fungus was named after comparison with 15 other collections of this species from four herbaria in the United States. It is suggested that Basidiomycetes might have arisen from a genus like Ascocorticium, where the amount of sterile tissue is reduced in comparison with the amount of ascogenous tissue.
Author Institution: Cincinnati Water Research Laboratory, Cincinnati, Ohio
1968-05-01T00:00:00ZCooke, William BridgePrimary Productivity-Phytoplankton Relationships, Hodgson Lake, Portage County, Ohiohttp://hdl.handle.net/1811/5387
Primary Productivity-Phytoplankton Relationships, Hodgson Lake, Portage County, Ohio
Olive, John H.; Morrison, John H.; Riley, Charles V.
Primary productivity-phytoplankton relationships were studied for one year (1963-64) in Hodgson Lake, Portage County, Ohio. The lake was found to be a ''blue-greendiatom'' reservoir of moderate productivity, but containing a large phytoplankton standing crop, dominated by the cyanophycean, Oscillatoria rubescens Decandole. Average cell volumes ranged from 1.4 mm3 liter-1 in September to approximately 88.6 mm3liter-1 in June, over 80 percent of which were 0. rubescens. Diatoms, including Cyclotella sp, Fragilaria sp. Asterionella formosa Hass, and Synedra delicatissima W. Sm., usually accounted for <10 percent of the total cell volume. Photosynthesis ranged from 4-5 mgC m-2 day-1 during the winter to approximately 2600-2700 mgC m-2 day-1 in June and October, with an annual mean of 847.5 mgC m~2 day"1. Photosynthesis per unit cell volume ranged from <1ugC day-1 mm-3 during the winter to 172.8 gC day-1 mm-3 in October, averaging 10.5 ugC day-1 mm-3 annually.
Author Institution: Department of Biological Sciences, Kent State University, Kent, Ohio
1968-05-01T00:00:00ZOlive, John H.Morrison, John H.Riley, Charles V.Studies of the Mexican Deltocephalinae : New Species of Eutettix and Two Allied New Genera (Homoptera: Cicadellidae)http://hdl.handle.net/1811/5386
Studies of the Mexican Deltocephalinae : New Species of Eutettix and Two Allied New Genera (Homoptera: Cicadellidae)
DeLong, Dwight M.; Harlan, Harold J.
Two new genera, Alladanus and Cozadanus, and sixteen new species of Deltocephalinae (leafhoppers) are described from Mexico. Twelve species, all new, are described and placed in the genus Eutettix Van Duzee: E. contorqus, E. lanceolatus, E. dentatus, E. alvadus, E. chelatus, E. spinus, E. pedus, E. divergens, E. krameri, E. guevarai, E. transversus, and E. ortegai. Two new species, A, cephalatus and A. mexellus, are described and placed in the new genus Alladanus, of which A. cephalatus is the genotype. Two new species, C. globosus and C. serratus, are described and placed in the new genus Cozadanus, of which C. globosus is the genotype.
Author Institution: Department of Zoology, The Ohio State University, Columbus, Ohio 43210
1968-05-01T00:00:00ZDeLong, Dwight M.Harlan, Harold J.Unusual Songs in Passerine Birdshttp://hdl.handle.net/1811/5385
Unusual Songs in Passerine Birds
Borror, Donald J.
Unusual songs of passerine birds fall into five categories: (1) special songs, sung only under certain circumstances, and considered unusual only because they are seldom heard; (2) developmental stages of primary song; (3) songs resembling those of another species (mimicry); (4) song types outside their usual geographic range, and rare or accidental where heard; and (5) atypical songs. Songs of each category are discussed, and illustrated with examples.
Author Institution: Faculty of Population and Environmental Biology, The Ohio State University, 1735 Neil Ave., Columbus, Ohio 43210
1968-05-01T00:00:00ZBorror, Donald J.Front Matterhttp://hdl.handle.net/1811/5384
Front Matter
1968-05-01T00:00:00Z